Scientists first noticed something was up in a study that compared two similar groups: transit drivers, who sit most of the day, and conductors or guards, who don’t. Though their diets and lifestyles were a lot alike, those that sat were about twice as likely to get heart disease as those that stood.
You’re more likely to die earlier from any cause if you sit for long stretches at a time. It doesn’t help if you exercise every day or not. Of course, that’s no excuse to skip the gym. If you do that, your time may be even shorter.
